Cita APA (7th ed.)

Ammen, C. W. (1997). Recovery and refining of precious metals (2a. ed.). C.W. Ammen Maic.

Cita Chicago (17th ed.)

Ammen, C. W. Recovery and Refining of Precious Metals. 2a. ed. Manitou Springs: C.W. Ammen Maic, 1997.

Cita MLA (9th ed.)

Ammen, C. W. Recovery and Refining of Precious Metals. 2a. ed. C.W. Ammen Maic, 1997.